I have several email accounts on btinternet.com most of the time they all login, retrieve mail without issue.Lately I've notice one not always the same one and sometimes several accounts will fail retrieving new mail with a login error.

If I go to the BT website and login there with the same details stored in Thunderbird I can log in and see the messages are there, yet I am still getting the login error with Thunderbird for the past 6 hours on one particular account.

Tomorrow can almost guarantee I'll be able to login with T/B without issue and by not changing any password or user settings.

That error message indicates that the problem is with the btinternt servers, not in Thunderbird. That's why the problem comes and goes without any changes to settings in Thunderbird and why it occurs sometimes with one account and sometimes another. When you log onto the web mail page for btinternet you are not accessing the same servers as Thunderbird does when it tries to get your messages.

That error message indicates that the problem is with the btinternt servers, not in Thunderbird. That's why the problem comes and goes without any changes to settings in Thunderbird and why it occurs sometimes with one account and sometimes another. When you log onto the web mail page for btinternet you are not accessing the same servers as Thunderbird does when it tries to get your messages.

Thanks Dan

I just fired up an old desktop pc that still has Forte Agent on it, updated the login details of all the email accounts and it behaves the same as Thunderbird, with only that one specific account that can't be reached. Will leave it overnight and hope it gets reset as I doubt I'll get anywhere with BT customer support